Make Nix builds work

1 files changed, 119 insertions, 0 deletions

diff --git a/vendor/golang.org/x/net/idna/trieval.go b/vendor/golang.org/x/net/idna/trieval.go
new file mode 100644
index 0000000..9c070a4
--- /dev/null
+++ b/vendor/golang.org/x/net/idna/trieval.go
@@ -0,0 +1,119 @@
+// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
+
+package idna
+
+// This file contains definitions for interpreting the trie value of the idna
+// trie generated by "go run gen*.go". It is shared by both the generator
+// program and the resultant package. Sharing is achieved by the generator
+// copying gen_trieval.go to trieval.go and changing what's above this comment.
+
+// info holds information from the IDNA mapping table for a single rune. It is
+// the value returned by a trie lookup. In most cases, all information fits in
+// a 16-bit value. For mappings, this value may contain an index into a slice
+// with the mapped string. Such mappings can consist of the actual mapped value
+// or an XOR pattern to be applied to the bytes of the UTF8 encoding of the
+// input rune. This technique is used by the cases packages and reduces the
+// table size significantly.
+//
+// The per-rune values have the following format:
+//
+//      if mapped {
+//        if inlinedXOR {
+//          15..13 inline XOR marker
+//          12..11 unused
+//          10..3  inline XOR mask
+//        } else {
+//          15..3  index into xor or mapping table
+//        }
+//      } else {
+//          15..14 unused
+//          13     mayNeedNorm
+//          12..11 attributes
+//          10..8  joining type
+//           7..3  category type
+//      }
+//         2  use xor pattern
+//      1..0  mapped category
+//
+// See the definitions below for a more detailed description of the various
+// bits.
+type info uint16
+
+const (
+        catSmallMask = 0x3
+        catBigMask   = 0xF8
+        indexShift   = 3
+        xorBit       = 0x4    // interpret the index as an xor pattern
+        inlineXOR    = 0xE000 // These bits are set if the XOR pattern is inlined.
+
+        joinShift = 8
+        joinMask  = 0x07
+
+        // Attributes
+        attributesMask = 0x1800
+        viramaModifier = 0x1800
+        modifier       = 0x1000
+        rtl            = 0x0800
+
+        mayNeedNorm = 0x2000
+)
+
+// A category corresponds to a category defined in the IDNA mapping table.
+type category uint16
+
+const (
+        unknown              category = 0 // not currently defined in unicode.
+        mapped               category = 1
+        disallowedSTD3Mapped category = 2
+        deviation            category = 3
+)
+
+const (
+        valid               category = 0x08
+        validNV8            category = 0x18
+        validXV8            category = 0x28
+        disallowed          category = 0x40
+        disallowedSTD3Valid category = 0x80
+        ignored             category = 0xC0
+)
+
+// join types and additional rune information
+const (
+        joiningL = (iota + 1)
+        joiningD
+        joiningT
+        joiningR
+
+        //the following types are derived during processing
+        joinZWJ
+        joinZWNJ
+        joinVirama
+        numJoinTypes
+)
+
+func (c info) isMapped() bool {
+        return c&0x3 != 0
+}
+
+func (c info) category() category {
+        small := c & catSmallMask
+        if small != 0 {
+                return category(small)
+        }
+        return category(c & catBigMask)
+}
+
+func (c info) joinType() info {
+        if c.isMapped() {
+                return 0
+        }
+        return (c >> joinShift) & joinMask
+}
+
+func (c info) isModifier() bool {
+        return c&(modifier|catSmallMask) == modifier
+}
+
+func (c info) isViramaModifier() bool {
+        return c&(attributesMask|catSmallMask) == viramaModifier
+}